[Epidemiological study of streptococcal carrier state in the 3rd District of Sofia].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002031:Bulgaria; D002353:Carrier State; D002648:Child; D006801:Humans; D008875:Middle Aged; D012216:Rheumatic Diseases / Q000382:microbiology*; D013291:Streptococcus / Q000302:isolation & purification*
Epidemiologicheskoe issledovanie streptokokkovogo batsillonositel'stva v tret'em raĭone Sofii.